One-Step Florisil Clean-up and Electron-Capture Gas Chromatographic Procedure for Detection of Additional Insecticide Residues in Milk

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Abstract
A rapid clean-up procedure for analysis of selected chlorinated pesticide resi-dues in dairy products was evaluated for analysis of additional chlori-nated and organophosphate insecticide residues. Eleven additional pes-ticides were successfully detected, using the clean-up procedure in connection with electron-capture gas chromatography. In some cases the insecticide residues were eluted from the clean-up column but could not be quantitated using electron-capture gas chromatography, due to presence of numerous peaks on the chromatographs.